.PHONY:all
all:mytest1 mytest2 mytest3

mytest1:mytest1.cpp
	g++ mytest1.cpp -o test1
mytest2:mytest2.cpp 
	g++ mytest2.cpp -o test2 -std=c++11
mytest3:mytest3.cpp 
	g++ mytest3.cpp -o test3 -std=c++11
.PHONY:clean
clean:
	rm -f test1 test2 test3 
